Bicycle lock



J. S. MANTON BICYCLE LOCK July 23, 1940.

Filed May 15, 1939 MU6JZZTO1': James 5. Mania/2 Jamil/ U Patented July 23, 1940 v ,208,849 swim E QK v James s. Manton, oak lat-1;, 111. Annlication May 15', 193Q,"S erial No. 273,681 I eclaims; (o1.: z 1s4) My invention relates to locking means, 'andhas to do more. particularly withlocking means suit? able for use with bicycles and like'structures, I

InmypatentsfNo; 1,998,512, grantedApril 23,

1935 and No .2 ,Q73,'21 7,'granted. March is, 1937;

:butin only one' 'direction, out 'of the,plane:o fthej ram fjt e bi y l nd' h oc means its the [wheel in such position so that theibicycle a o b r n we 2 i en m h w re agci ple 1 dly i ei P s twe ter may, teena e I z d. as anim r i men we th o ng m a S aw nthgpatentsabWe en i e fld b par ula con er d. w h the r v sio o andih e ockin m ans w re he cent. w el r. h b c' le:wer t r gsel a en,

' a e l j tl t e tl n fi t rame; bi, th 1 ycl t -1 11 1. one We P io s; nd. .l 'e Po t -,4; pe call ment on. i th in ta t c s e' 'i I I in certain features ofeonstruction,combination or elements and arran ement or parts which win; he exemplified infthe cjonstructionto heedesri ian w ic the s o Qt ap cati n wi l be indicat d, n' iear n es cl i "In t se ent n d a i wh S shown the preferred illustrative embodiment of my invention:'

Figure 1 is a fragmentaryelevatibnal iewers bicycle head with locking means reactors-ante with my inventionappliedthe'reto;" i

Figure'Z'is "ar'vertical sectional .view through'thehead of the bicycle frame and associated partsp embodying the locking: means I of my invention; parts being shown in elevation and parts being broken away; 2 Figure. 3 is asection taken substantially on-line 3.3 of Figure 2,;partsbeing shown in elevation; Figure 4 isa section takensubstantially on line l -.4 of. Figure. 2,. and. showing, the inoperative po-. sition of alocking member; f .;.I-,' Figure 5is ayiew similanto-Figure fl but with the lockingmemberin oper [tive position and g-E fi i nd'y'ie oia tl nde 1 -g-l BY ay bf ll i t rthl kinam cycle having the usual frame comprising the tureach bar 0, all rigidly secured together, as shown,

in a known manner. Head a receives stemd of a fork 'ej, within which is suitably mounted-the, Stem d f front wheel (not shown) of the bicycle.- turns in known types of bearing structures mounted 'in' the upper and lower ends 1 and g,

. respectively, of head a; Handle bars 'h, whichar'e depending shank i thereof suitably'secured to the 9'10:

disposed above the upper end of -head a,have the stem diin a knownmanner-for steering purposes. Stem d fof fork e is disposed in concentric spaced relationship to head a, leaving within the" head 'space ilc of appreciable widthextending about the stein. The bicycle so far described 'is of" known construction and the SDELCEIC within head .a' is ordinarily not utilized for any useful purpose, the space being due to the mounting of stem" djin .the' bearing structures carried atff and a,

practice in constructing bicywhich is: common cles of known type.

1 In applying the locking means of my presentine verition 'toabicycle, I utilize the space It for hous ih g'atubular structure inthe form of a sleeve 6 'Ijh'is sleeve extends around stem d, the "inner sur face offthe sleeve being spaced from thestem', while the outer surface ,of the sleeve fits snugly? the inner surface of headoj. I Sleeve 6 may be f orme'dof any suitable or'preferred metal, and it war head a, an upper horizontal bar b, and a 1 is split longtudinally for its full length, as indicated at l, thereby providing an arcuate-shaped 1 guide member 8 and an arcuate-shaped locking member 9. Guide member 8 is held stationary,

beingrigidly secured tothe inner surface of head a 'as' by brazing, welding, or in any other suitable or preferred manner. Locking member 9' moves relatively to bothhead a and guide member 8. As

guide member 8 is held rigidly with respec't'to head 'a, it provides a bearing guide tomaintain' locking member 9 in firm contact with the inner" surface of the headf Also, it frestrains rotation of the locking member with respect to the head. Preferably, the guide member 8 is of greater length than locking member 9 to provide a bearing guide for the full length of said latter member in its movement longitudinally of the manner hereinafter'described. p e A cylindrical collar H is brazed, as indicated at l2,'or otherwise suitably secured to head a' and the head in;

extends radially therefrom, the interior of this collar being in register with a corresponding opening through the head into the space A known pin type of cylinder lock l3is received in collar l [and secured therein as by the blind pin M. This look comprises a cylindrical barrel or casing [5 within which a cylinder IB is mounted for rotation, this cylinder normally being locked against rotation by pins which can be released upon insertion of a proper key into the cylinder. A disc I? is mounted upon the inner end of the cylinder by means of a pin 18, both the pin and disc being located eccentric to the axis of the cylinder. Inasmuch as lock I3 is of known construction, it need not be-described. ingreater detail, it being sufficient to note that the lock is provided with a rotatable cylinder having, at

its inner end, an eccentrically mounted disc, or"

equivalent member.

Adjacent its upper end, locking member 9 is provided with the transverse of disc 11. substantially equal to the diameter of the disc so that the disc has a relatively snug fit therein. The disc provides an. operating-connection between lockingmember 9- and cylinder 16. And, because of the. eccentric mounting of. the disc upon cylinder [6, rotation of saidcylinder. will cause longitudinal movement oflocking member 9',Withrespeotto. head a.. Adjacent its lower end, locking. member 9.is provided. with the laterally spaced, openings. 2,l-22. These openings are preferabl-ysubstantially rectangular. in cross-sectiorr. and are adapted, selectively, to receive one endof: a locking. I pin; 23.

Asshown,,pin 23 is carried in a lateral bore 24 formed. in ametal plug 25, which plug, is prefer.- ablyforced. into stem (1 under pressure and. brazed, welded, or otherwise suitably secured.

thereto. Pin 23 has free sliding movement in bore Mandthrough an: aligned opening in the.

stem (1. A- spring. 26 disposed. within the bore betweentheend of the pin and the wall of, stem d of the bore into.

The disposition. that thepin .contacts.

normally-urges, the pin outwardly contact. withlocking member 9.

of plug 25 in stem 01 is such locking-member Bimmediately above the openings 2 l- -22-, when the lockingmember is in its lowered. or: normal position, as: shown in Figure. 2.. When, the wheeleof the bicycle is in the plane of the bicycle frame comprisingv theharsh and c, the.

pinwill be, disposed immediately above the portion 9. of themember 9-which separates theopenings 2l.-22,.

ofandbelow the.pin..23, and. engagement of pin 23r inv oneof the: openings Zia-22. will require. raising of member 9 and turning of the front. bicycle? wheel so as to, direct it laterally of theframe; at an appreciable angle thereto. With the wheel so.- directed, and the pin engaged. in one of the slots. 2|-22, the bicycle cannotberidden straight ahead, but canberidden in. a circle only, the. radius of which is determinedby the. angle at which 'the front wheel is set.

In order to engagepin23 in one of the openings 2l-w22 .andthereby lock the bicycle, the proper. key is first inserted into cylinder l6, whicliis then rotated clockwise to move the locking member' 9-longitudinallyupwardly through. the. me-.-

torthe position indicated bythe dot and dash lineof; Figure 4-,, the openings Her 22, respectively,

will be brought into register with the pin 23, and

slot l9 for reception Preferably, the width of slot I9. is.

Normally, one of. the openings. 2 li--22 will,.therefore,be disposed. on opposite:sidesthe pin automatically will move outwardly or bore 24 into the-appropriate opening under influence of spring 26. Movement of the pin into openings 2| or 22 will, of course, be limited by contact of the pin with the inner surface of head a. To unlock the bicycle, it is only necessary to insert the proper key into cylinder [6 and rotate the cylinder counterclockwise. This returns the looking member 9 to its normal or lowered position. It will be. noted that theuppertransverse defining edges of openings 2l--22"are beveled as indicated at 21. When the locking member 9 ismoved downwardly, these edges contact pin 23 and: force it out of the openings 2l-22 and inwardly of the bore 24, where it is disposed behind locking member 9 in the manner above described.

I find thatthe provision of the herein described locking means which permits the front bicycle wheelto-be turned in either one of two directions outof theplane of the. bicycle frame, and locked in.,such.positions, greatly facilitates. the problem of parking.the,bicycle,.especially whenit is leaned againsta wall, which iscommonly the. practice when the bicycle is,t.emporar-ily.parked. The pro-- vision. of the. spring. pressed pin obviates the necessity. ofsearching. for the locked position of the-.wheel, thatis, operatingthe lock and turning. thewheel, at the same, time. to bring, a pin and: be fully openings. 21l,- 22 neither-the head nor the stem, 11'.

canbemovedrelatively to each other. No additional means is, therefore, necessary to obviate.

thedangen of, any one attempting to dismantle theheadior. the purpose of opening the lock..

The-locking device of my invention is particularly suitable for use in bicycles and like structures,-. as; pointed outabove.v I do not. limit my invention, to this single use, however, since it is.

welladaptedfor many other purposes, and is particularly suitable. for useinconnection with a tubular head or casing and a stem or equivalent.

member mounted for turning movement within therheador casingand spaced therefrom. It will also. be-understood, by those. skilled in, the art,

that changes. in construction and arrangement of: pa-rtspf my invention may be resorted tow-ithout departing from the fieldand scope. of the-same, and I intendto include all. such variationsas fall within, the scope of the appended claims,-in this. application in which the preferred form. only of my; invention is; disclosed;

What I. claim is:

1. In combination in.lockingmeans of the character described; a. fixed tubular head,v astem extending.- intosaid. head in concentric spaced."

relation/ thereto: and mounted for turning movement, means comprising a curved locking member disposed between said stem and head and slidable lengthwise-of the latter into operative and-inoperativeposition, a locking element carried by, said stem,. saidlocking member-having a plurality of openings therein spaced apart circumferentially and removed inwardly from all' marginal edges thereof arranged for selective. engagement by said. locking element by rotation of. saidstemjto. different positions when the looking member is. in operative position,v and means, operative to move said locking member intooperative position and inoperative position and lock it in adjustment.

2. In combination in locking means of the character described. a fixed tubular head, a stem extending into said head in concentric spaced re-' ing element normally contacting said locking member at a point removed from said openings axially of said head when the locking member is in inoperative position, said locking element contacting the portion of the locking member between said openings when the locking member is moved to operative position whereby selective rotation of the stem in opposite directions will bring one of said openings into register with said locking element for projection of the'latter thereinto, and means operative to move said locking member into operative position and inoperative position and lock it in adjustment.

3. In combination in locking means of the character described. a fixed tubular head, a stem extending into said head in concentric spaced relation thereto and mounted for turning movement, means comprising a locking member disposed between said stem and said head and slidable lengthwise of the latter intooperative and inoperative position, a plug fixed in said stem and having a lateral bore, a locking element carried in said bore, means normally urging said loclnng element outwardly of said bore through an aligned opening in said stem into contact with said locking member, said latter member having openings arranged for selective engagement by the locking element when the locking member is moved to operative position, and means operative to move said locking member into operative position and inoperative position and lock it in adjustment.

4. In combination in locking means of the character described, a fixed tubular head, a stem extending into said head in concentric spaced relation thereto and mounted for turning movement, means comprising a locking member disposed between said stem and head and slidable lengthwise of the latter from a normally lowered inoperative position to a raised operative position, a plug fixed in said stem and having a lateral bore, a pin carried in said bore, a spring between one end of said pin and the wall of the stem normally urging the pin outwardly of the bore through an aligned opening in said stem into contact with the locking member, said latter member having openings arranged for selective engagement by the pin when the locking member is moved to raised operative position, and means operative to movesaid locking member into operative position and inoperative position and lock it in adjustment.

5. In combination in locking means of the character described, a fixed tubular head, a stem extending into said head in concentric spaced relation thereto and mounted for turning movement, a tubular structure disposed within the space between the stem and head, said tubular structure comprising alockingmember and a fixed guide member providing a bearing guide for said locking member, said locking member having a plurality of openings formed therein and being slidable lengthwise of the head into operative and inoperative position, a pin yieldably carried by said stem and selectively engageable in-said openings in the operative position of said locking member, a lock accessible exteriorly of said head,

and operating connections between said lock andsaid locking member for moving the latter into operative position and inoperative position and locking it in adjustment.

6. In combination in locking means of thecharacter described, a fixed tubular head, a stem extending into said head in concentric spaced relation thereto and mounted for turning movement, a sleeve disposed within the space between the stem and the head and with its outer surface snugly abutting the inner surface of said head, said sleeve being split for its full length to thereby provide a locking member and a guide memher, said guide member being rigidly secured to operative position of said locking member, a lock accessible exteriorly of said head, and operating connections between said lock and said locking member for moving the latter into operative position and inoperative position and looking it in adjustment.

7. In combination in locking means of the character described, a fixed tubular he d, a stem extending into said head in concentric spaced relation thereto and mounted for turning movement, a locking member provided with an opening and disposed between said stem and head to slide lengthwise of the latter into operative and inoperative position, a locking element carried within said stem and maintained in a retracted position therein by said locking member in the inoperative position of the latter, means projecting said locking element from its retracted position into the opening in said locking member in the operative position of the latter, and means operative to move said locking member into operative position and inoperative position and lock it in adjustment.

8. In combination in locking means of the character described, a fixed tubular head, a stem extend-ing into said head in concentric spaced relation thereto and mounted for turning movement, a locking member provided with an opening and disposed between said stem and head to slide lengthwise of thelatter into operative and inoperative position, a locking element carried within said stem, means operative to project said locking element from a retracted position in said stem into the opening in said locking member in the operative position of the latter, cam surfaces operative upon movement of said looking member from operative toinoperative position to return said locking element to its retracted position within said stem, and means operative to move said locking member into operative position and inoperative position and lock it in adjustment. i

9. In combination in locking means of the character described, a fixed tubular head, a stem extending into said head in concentric spaced relation thereto and mounted for turning movement, a curved locking member provided with a plurality of circumferentially spaced apart openingsi disposed inwardly from all marginal edges thereof" positioned between said stem and. head to slide v lengthwise of the latter into operative and inoperative position, a locking element carried by said stem, means operative to project said ings, theeam surface of the selected opening into which said locking elementprojects being;

operative to return said locking element to its retracted position within saidstem upon movement of said locking member from operative to inoperative position, and means operative to move;

said locking memberv into operative position and. inoperative position: andvlock it in adjustment.

JAMES S; MANTON. 

